Non-freezing waste-outlet.



J. M. COLEMAN.

NON-FREEZING WASTE OUTLET.

APPLICATION FILED FEB. 11. ms.

Patented Dec. 14, 1915.

LIBQAYS.

J M (ale/nan COLUMBIA PLANOURAPH co., WASHINGTON, n, c.

JAMES M. COLEMAN, OF MONTREAL, QUEBEC, CANADA.

NON-FREEZING WASTE- OUTLET.

Specification of Letters Patent.

Patented Dec. 1%, 1915.

Application filed February 11, 1915. Serial No. 7,621.

To all whom it may concern.

Be it known that I, James M. COLEMAN, a citizen of the Dominion of Canada, and resident of the city of Montreal, in the Province of Quebec and Dominion of Canada, have invented certain new and useful Improvements in Non-Freezing VVaste- Outlets, of which the following is a full, clear, and exact description.

This invention relates to improvements in non-freezing waste outlets for railway cars, and the object is to provide a simple, inexpensive and efficient outlet provided with a heating means which will prevent freezing of the same in cold weather.

A further object is to provide a device which will operate equally well for the waste outlets of either basins, closets or the like,

and which will require a minimum of heating agent.

The device consists essentially of a sleeve surrounding the waste outlet and spaced therefrom, the space being greatly reduced at the bottom in order to prevent too rapid escape of the heating agent.

In the drawings which illustrate the illvention: Figure 1 is a vertical sectional view of a wash basin waste outlet, showing one form of the present invention embodied therein. Fig. 2 is a cross sectional view on the line 2--2, Fig. 1. Fig. 3 is a vertical. sectional view of a closet outlet showing a modified form of the invention incorporated therein. Fig. 4: is a sectional view on the line H, Fig. 3. Fig. 5 is a detail of the connection between the waste pipe and sleeve.

It is customary to make the waste pipes leading from cars of frusto-conical form arranged with the large end down so as to prevent as far as possible stoppage of the pipe by freezing or otherwise. This form of waste pipe has been found to guard effec tively against stoppage from all causes except extreme cold.

To overcome freezing, the waste pipe is surrounded by a sleeve into which steam or other heating agent may be passed, thus providing a hot jacket for the waste outlets which prevents freezing.

In Fig. 1 of the drawings, a wash basin waste pipe 11 is shown connected to a frustoconical outlet pipe 12 projecting below the floor line 13. In one form of the invention, the upper end of the outlet pipe 12 is surrounded by a hollow member 14 having a steam inlet pipe 15. This member 1% extends only part way down the outlet, and at its lower end does not quite touch the out let pipe, so that a small annular passage 16 is formed. Steam or other heating agent fron'i the hollow member 14 escapes through the passage 16 and bathes the entire outer surface of the outlet pipe 12, so that the same is kept warm. The conical form of the pipe assists in holding the heating agent in close contact with the outer surface thereof. In order to prevent this steam being blown away as the car moves, the outlet pipe 12 is surrounded by a sleeve 17 extending from the floor line nearly to the bottom of the outlet pipe as clearly shown. This sleeve is preferably cylindrical in form, so that it approaches very closely to the outer surface of the outlet pipe, and provides a very small annular outlet 18 through which the steam escapes so slowly that practically all the heat is utilized to warm the waste out-' let. If this opening proves too large, as in the case of waste pipes of large diameter, the lower end of the cylindrical sleeve may be made to touch the outer surface of the outlet pipe, small slots 19 being provided at suitable intervals for the escape of steam, as shown in Fig. 4:. In the form shown in Fig. 1, the member 14: has in addition to the annular outlet 16 a plurality of small apertures 20, so directed that steam escaping through these members blows against the inner surface of the sleeve 17 and warms the same sufliciently to protect steam issuing through the opening 16 from being condensed.

The invention is shown in Figs. 1 and 2 as applied to a basin waste and in the remaining figures as applied to a closet waste, the only difference being that necessitated by the different character of the apparatus. In Figs. 3, 1 and 5, the sleeve 17 is provided with a flange 21 over which the upper end of the waste outlet is flanged, as clearly shown at 22, Fig. 5, and secured in place by a clamping ring 23. The sleeve 17 is bedded in the upper waterproof floor 24, so that the flange 25 of the closet hopper 26 which rests on the floor may depend within the ring The sleeve is provided with an extension 27 to which the steam pipe 15 connects. In order to permit the formation of the slots 19 previously described, the sleeve is provided with an internal flange 28 at its lower end.

\Vhile the invention has been shown and described only in two forms and for use on railway cars, it is obvious that the same invention may be applied to further uses, and is not necessarily limited to use with railway cars, or to the specific forms shown.

Having thus described my invention, what I claim is:

A device of the character described, comprising the combination with a frusto-coni cal waste pipe of a hollow member surrounding the waste pipe at its small end, an annular outlet from said member formed to direct fluid issuing therefrom against the entire outer surface of the waste pipe, a cylindrical sleeve connected to said member 7 Copies of this patent may be obtained for surrounding the waste pipe nearly to its large end and spaced therefrom to form an annular chamber confining fluid issuing from the annular outlet, a plurality of outlets from said member arranged to direct fluid issuing therefrom against the inner surface of said sleeve, and an outlet of greatly reduced area leading from the chamber at the large end of the waste pipe.

In witness whereof, I have hereunto set my hand, in the presence of two witnesses.

JAMES M. COLEMAN.

Witnesses L. R. V. ALLEN, (,1. M. MORELAND.

five cents each, by addressing the Commissioner of Patents, Washington, D. C. 

